CN204922071U - Bivalve seat ball valve sealed firmly - Google Patents
Bivalve seat ball valve sealed firmly Download PDFInfo
- Publication number
- CN204922071U CN204922071U CN201520624985.5U CN201520624985U CN204922071U CN 204922071 U CN204922071 U CN 204922071U CN 201520624985 U CN201520624985 U CN 201520624985U CN 204922071 U CN204922071 U CN 204922071U
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- valve
- ball core
- seat
- ball
- medium channel
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Abstract
The utility model relates to a governing valve, the utility model discloses a bivalve seat ball valve sealed firmly, it includes valve rod (1), valve body (2) and ball core (3), media channel (21) both ends all are equipped with outer wall and inseparable cylindric disk seat (4) of laminating of media channel (21) inner wall, two disk seat (4) are close to the terminal surface of ball core (3) and closely laminate along two terminal surfaces of through -hole axis direction with ball core (3) respectively, the tip that ball core (3) were kept away from in disk seat (4) is equipped with clamping ring (5), clamping ring (5) fix valve body (1) tip and disk seat (4) between be equipped with spring (6). The utility model discloses an all set up the disk seat at ball core both ends for ball core and valve seat seal face pair, and improve reasonable adjustable sealing force to the disk seat, fully realize reliably between ball core and the disk seat hard sealed and move the reliability for a long time.
Description
Technical field
The utility model relates to a kind of modulating valve, has particularly related to a kind of hard seal ball valve.
Background technique
Hard seal ball valve is as one of the critical valves of specific position, seal ball-valve ubiquity in the market poor sealing performance, be there is certain leakage rate, particularly after Long-Time Service sealing surface easy to wear, easily leak, affect the switch life of valve and close the problems such as leakproofness, seriously hinder the normal use of valve, cannot meet growing automatic demand for control.
Summary of the invention
The defects such as easy to wear, the easy leakage that the utility model exists for seal ball-valve in prior art, provide a kind of hard seal ball valve.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:
Double-valve-seat hard seal ball valve, comprise valve rod, the valve body being provided with medium channel and the ball core being provided with through hole, ball core is provided with a groove, valve rod bottom is positioned at groove, ball core is fixed on valve stem end by groove, ball core is rotatable to be arranged in medium channel, medium channel two ends are equipped with the valve seat of the cylindrical shape that outer wall and medium channel inwall fit tightly, two valve seats fit tightly with two end faces of ball core along through-bore axis direction respectively near the end face of ball core, valve seat is provided with trim ring away from the end of ball core, trim ring is fixed on valve end and and is provided with spring between valve seat.
By all arranging valve seat at ball core two ends, making ball core and sealing surface of seat carry out pairing integral grinding, ensureing firmly to seal and long-term action reliability reliably between ball core and valve seat; Provide rational valve base sealing power by trim ring simultaneously, substantially increase valve working life, thus better ensure the sealing effect of valve.
As preferably, ball core is equipped with the first chamfer surface along on two end faces in through-bore axis direction, and the end face that valve seat fits tightly with ball core is provided with the second chamfer surface coordinated with the first chamfer surface, the angled complimentary of the first chamfer surface and the second chamfer surface.The mode adopting inclined-plane to connect, can make valve seat and ball core press tighter and tighter under the effect of trim ring, the tightness that abundant guarantee connects between the two.
As preferably, trim ring outer wall is provided with outside thread, and medium channel end is provided with internal thread, and trim ring is threaded with medium channel.Top board is threaded with big valve core, can facilitate the assembling of whole modulating valve, and conveniently carries out reasonable adjusting to valve base sealing power.
As preferably, trim ring is provided with at least one threaded mounting hole.Exerted a force by threaded mounting hole and realize trim ring screw-in or screw out, screwing fast and unscrewing of trim ring can be realized, realize regulating the sealing force between valve seat and ball core as required.
As preferably, valve body upper end portion is connected with Stuffing box, and valve rod is provided with filler through Stuffing box valve rod and Stuffing box away from the end of ball core.By arranging filler around valve rod, to ensure the sealing of valve, then make valve more safe and reliable.
As preferably, Stuffing box and valve body are connected by stud and the joint of Stuffing box and valve body is provided with middle flange seal ring.
The utility model, owing to have employed above technological scheme, has significant technique effect:
The utility model, by all arranging valve seat at ball core two ends, makes ball core and sealing surface of seat match, and improves rational adjustable sealing force to valve seat, fully realize firmly sealing and long-term action reliability reliably between ball core and valve seat.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment 1;
Fig. 2 is part A partial enlarged drawing in Fig. 1.
The toponym that in accompanying drawing, each number designation refers to is as follows: 1-valve rod, 2-valve body, 3-ball core, 4-valve seat, 5-trim ring, 6-spring, 7-Stuffing box, 8-middle flange seal ring, 21-medium channel, 22-seal ring, 31-through hole, the 32-the first chamfer surface, 33-groove, the 41-the second chamfer surface, 51-threaded mounting hole, 71-filler.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
Embodiment 1
Double-valve-seat hard seal ball valve, as shown in Figure 1, comprise valve rod 1, be provided with the valve body 2 of medium channel 21 and be provided with through hole 31 and be fixed on the ball core 3 of valve rod 1 end, ball core 3 is rotatable to be arranged in medium channel 21, ball core 3 is provided with a hexagonal groove 33, cross section, valve rod 1 bottom is Hexagon and is positioned at groove 33, thus realizes valve rod 1 and drive ball core 3 to rotate.Valve body 2 upper end portion is by stud and the Stuffing box 7 that has been threaded, Stuffing box 7 is provided with middle flange seal ring 8 with the joint of valve body 2, valve rod 1 is provided with filler 71 through Stuffing box 7 valve rod 1 and Stuffing box 7 away from the end of ball core 3, to ensure the sealing of valve, then make valve more safe and reliable.
Medium channel 21 two ends are equipped with the valve seat 4 of the cylindrical shape that outer wall and medium channel 21 inwall fit tightly, ensure the sealing between valve seat 4 and medium channel 21, ball core 3 is equipped with the first chamfer surface 32 along on two end faces of through hole 31 axial direction, the end face that valve seat 4 fits tightly with ball core 3 is provided with the second chamfer surface 41 coordinated with the first chamfer surface 32, first chamfer surface 32 and the second chamfer surface 41 are annulus chamfer surface, and the angled complimentary of the first chamfer surface 32 and the second chamfer surface 41, two valve seats 4 are fitted tightly with two end faces of ball core 3 along through-bore axis direction respectively near the end face of ball core 3.Valve seat 4 is provided with trim ring 5 away from the end of ball core 3, trim ring 5 be fixed on valve body 1 end and and be provided with spring 6 between valve seat 4, valve seat 2 end is provided with seal ring 22, spring 6 is located between seal ring 22 and trim ring 5, in the present embodiment, trim ring 5 outer wall is provided with outside thread, medium channel 21 end is provided with internal thread, and trim ring 5 is threaded with medium channel 21, and trim ring 5 is provided with two threaded mounting holes 51.Spring 6 adopts butterfly spring, it is compared to the small volume of general common spring, thus it takes up space little, also there is rigidity simultaneously large, buffering vibration absorption ability is strong, the advantages such as large load can be born with small deformation, adopt butterfly spring can fully to seat compression, to ensure the sealing between valve seat 4 and ball core 3.
During specific operation, the actuator of end and modulating valve that valve rod 1 stretches out Stuffing box 7 is connected, and under the effect of actuator, band ovable valve stem 1 rotates, thus realizes the rotation of ball core 3, makes ball core 3 realize connection or the closedown at valve seat 4 two ends.When modulating valve closed by needs, when making import and the outlet of valve body 2, first unclamp and unclamp trim ring 5 by threaded mounting hole 51, reduce the pressure of valve seat 4 pairs of ball cores 3 at two ends, then by actuator's rotation valve rod 1, valve rod 1 drives ball core 3 to rotate, make ball core 3 by the axis of axis runout valve seat 4, final and valve seat 4 axes normal, realizes import and outlet that ball core 3 blocks valve seat 4, thus realizes the closedown of modulating valve.When modulating valve opened by needs, first rotated by execution architecture band ovable valve stem 1, valve rod 1 drives ball core 3 to rotate, finally make ball core 3 by the dead in line of axis and valve seat 4, then by compressing trim ring 5, under the effect of trim ring 5 and spring 6, ball core 3 two ends and valve seat 4 fit tightly, simultaneously because valve seat 4 and ball core 3 are compressed by the inclined-plane of complementation, under the effect of trim ring 5, can make to block tighter and tighter between valve seat 4 and ball core 3, thus provide rational valve base sealing power for connection between valve seat 4 and ball core 3, substantially increase the working life of valve, the sealing effect of better guarantee valve.
In a word, the foregoing is only preferred embodiment of the present utility model, all equalizations done according to the utility model claim change and modify, and all should belong to the covering scope of the utility model patent.
Claims (6)
1. double-valve-seat hard seal ball valve, comprise valve rod (1), be provided with the valve body (2) of medium channel (21) and be provided with the ball core (3) of through hole (31), ball core (3) is rotatable to be arranged in medium channel (21), it is characterized in that: ball core (3) is provided with a groove (33), valve rod (1) bottom is positioned at groove (33), medium channel (21) two ends are equipped with the valve seat (4) of the cylindrical shape that outer wall and medium channel (21) inwall fit tightly, two valve seats (4) fit tightly with two end faces of ball core (3) along through-bore axis direction respectively near the end face of ball core (3), valve seat (4) is provided with trim ring (5) away from the end of ball core (3), trim ring (5) is fixed on valve body (1) end and and is provided with spring (6) between valve seat (4).
2. double-valve-seat hard seal ball valve according to claim 1, it is characterized in that: ball core (3) is equipped with the first chamfer surface (32) along on two end faces of through hole (31) axial direction, valve seat (4) is upper is provided with the end face that ball core (3) fits tightly the second chamfer surface (41) coordinated with the first chamfer surface (32), the angled complimentary of the first chamfer surface (32) and the second chamfer surface (41).
3. double-valve-seat hard seal ball valve according to claim 1, it is characterized in that: trim ring (5) outer wall is provided with outside thread, medium channel (21) end is provided with internal thread, and trim ring (5) is threaded with medium channel (21).
4. double-valve-seat hard seal ball valve according to claim 3, is characterized in that: trim ring (5) is provided with at least one threaded mounting hole (51).
5. double-valve-seat hard seal ball valve according to claim 1, it is characterized in that: valve body (2) upper end portion is connected with Stuffing box (7), valve rod (1) is provided with filler through Stuffing box (7) valve rod (1) and Stuffing box (7) away from the end of ball core (3).
6. double-valve-seat hard seal ball valve according to claim 5, is characterized in that: Stuffing box (7) and valve body (2) are connected by stud and Stuffing box (7) is provided with middle flange seal ring (8) with the joint of valve body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520624985.5U CN204922071U (en) | 2015-08-18 | 2015-08-18 | Bivalve seat ball valve sealed firmly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520624985.5U CN204922071U (en) | 2015-08-18 | 2015-08-18 | Bivalve seat ball valve sealed firmly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204922071U true CN204922071U (en) | 2015-12-30 |
Family
ID=54971200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520624985.5U Active CN204922071U (en) | 2015-08-18 | 2015-08-18 | Bivalve seat ball valve sealed firmly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204922071U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339456A (en) * | 2017-08-23 | 2017-11-10 | 昆山维萨阀门有限公司 | A kind of eccentric hard sealed ball valve |
-
2015
- 2015-08-18 CN CN201520624985.5U patent/CN204922071U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339456A (en) * | 2017-08-23 | 2017-11-10 | 昆山维萨阀门有限公司 | A kind of eccentric hard sealed ball valve |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |